For those who struggle with matter, motion, work, and force For those who struggle with chemistry For those who struggle with word problems Published by Risha Publishing Editorial Department Set of 3 books Purchased almost 10 years ago. Hardly used. No writing inside. However, there is some tearing on the cover (last photo). I think this is a problem set that will be helpful for science learning for junior high school students. Please purchase only if you understand that this is a used item stored by an amateur. #RishaPublishingEditorialDepartment #book #society/education・learning